摘要
Objective： To assess the anti-invasive effect of DDB and its possible active mechanism in human hepatocellular carcinoma MHCC97-H with high metastasis potential. Methods： MTT assay was used to evaluate the cytotoxicity of DDB to MHCC97-H cells and the anti-adhesion of DDB on MHCC97-H cells to laminin （LN） and fibronectin （FN）. The anti-invasive effect of DDB was detected by the transwell chamber experiment. VEGF, nm23-H1 and uPAR mRNA transcriptions were determined by RT-PCR assay. The secretion and expression of a-fetal protein （AFP） were analyzed by ELISA and flow cytometry, respectively. Results： DDB at non-cytotoxic concentrations （10, 50 and 100 μmol/L） obviously inhibited the adhesion of MHCC97-H on LN and FN. In the transwell chamber experiment, the inhibition rates of the invasion of DDB 50 and 100 μmol/L on MHCC97-H cells were 25.8% and 32.3%, respectively. By RT-PCR assay, DDB 50 and 100 μmol/L decreased VEGF, nm23-H1 and uPAR mRNA expressions in MHCC97-H cells. The ELISA assay showed that 50, 100 and 200 μmol/L DDB decreased the AFP secretion of MHCC97-H cells, the inhibitory rates were 16.5%, 17.5% and 48.5%, respectively. DDB also decreased the expression of AFP in MHCC97-H cells by flow cytometry assay. Conclusion： DDB, an anti-hepatitis drug, at non-cytotoxic concentrations showed significant anti-invasion effect in human hepatocellular carcinoma MHCC97-H cells, and the inhibition of VEGF, nm23-H1 and uPAR expression should contribute to the anti-invasion property of DDB.
